package com.okwanshiwu.pattern.prototypePattern;

import java.util.Hashtable;

public class ShapeCache {
    
    private static Hashtable<String, Shape> shapeMap = new Hashtable<String, Shape>();

    public static Shape getShape(String shapeId) {
       Shape cachedShape = shapeMap.get(shapeId);
       return (Shape) cachedShape.clone();
    }

    // 对每种形状都运行数据库查询，并创建该形状
    // shapeMap.put(shapeKey, shape);
    // 例如，我们要添加两种形状
    public static void loadCache() {
       Circle circle = new Circle();
       circle.setId("1");
       shapeMap.put(circle.getId(),circle);

       Square square = new Square();
       square.setId("2");
       shapeMap.put(square.getId(),square);

    }
 }